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  • Waiting for answer Find the mass in grams of one molecule of NO2 ; you must exp...

    in oder to find the mass of one molecule of ##NO_2## nitrogen dioxide, which could actually be the polyatomic ion nitrite ##NO_2^-1##, we must convert one molecule to moles and than moles to grams. molecules ##- ## moles ##- ## grams Begin with one molecule and convert it to moles by using Avog...

  • Waiting for answer How many quarts are in a gallon?

    There are 4 quarts in a gallon.

  • Waiting for answer How can I write the formula for potassium bromide?

    You need to know the ions for potassium and bromide. Potassium is in Group 1 of so it loses one electron to become K+ and the Bromine atom is in Group 17 so it gains one electron to become Br-. The charges are therefore +1 and -1 and they balance and cancel each other out so the compound Potassium...

  • Waiting for answer The radius of a circle is 5.5 cm. What is the circumference...

    34.55 cm or.345 meters Radius is 5.5 cm. Circumference = pi x diamter ( diameter of a circle is the radius x 2) C=Pi x 11 C=34.55cm/ 100 (because there are 100 cm in meter} C=.345...

  • Waiting for answer What is the difference between supplementary angles and a li...

    Linear pair is a pair of two supplementary angles. But two supplementary angles might or might not form a linear pair, they just have to "supplement" each other, that is their sum should be ##180^o##....

  • Waiting for answer A marker is 0.13 meters long. What is the length in millimet...

    130 millimetes Millimeter is a small part of meter (1/1000m). That means some number of meters is some larger number of millimeters (for length itself to be the same). 0.13m = 0.13*1...

  • Waiting for answer Why do earthquakes occur along the plate boundaries?

    Pressure. The is made up of different plates. These plates move. Some move away from each other, but others push or slide against each other. When plates move away the molten magm...

  • Waiting for answer What are atomic size trends within transition metals?

    Periodic trends play a huge role in chemistry. Regular changes in atomic size and other variables across allow us to make systematic predictions about the behavior of similar . Covalent radius is a convenient measure of atomic size. The figure below shows the covalent radii of metals in groups 4-1...

  • Waiting for answer What is chromatin and what are chromosomes?

    chromatin/chrmosomes chromatin- unwound dna that is wrapped around called histones (imagine as noodles with meatballs) chromosomes- tightly wound dna found only during cell division...

  • Waiting for answer How do kepler's laws of planetary motion relate to newton's...

    were obtained from direct observation of planetary motion, but can be derived from Newton's universal law. You might want to look at:http://www.physicsclassroom.com/class/circles/Lesson-4/Kepler-s-Three-Laws A quick example is as follows:the universal law is ##F={GMm}/R^2##, where ##M## is th...

  • Waiting for answer What are the stages of the menstrual cycle in a human female...

    The cycle is divided into 4 phases/stages: Menstrual Follicular Ovulation Luteal Here are the 4 phases (in order): MENSTRUAL PHASE The menstrual cycle begins (day 1 is) fr...

  • Waiting for answer The sixth-graders at Meadowbrook Middle School are going on...

    we need ##7## busses to transport ##325## travelers. This is a relatively simple math question if we break it down. The numbers may seem overwhelming, but if we simplify them we see...

  • Waiting for answer How do you find two consecutive integers whose sum is 73?

    If we let the smaller of 2 consecutive integers be ##x## then the larger is ##x+1##. We are told that ##(x) + (x+1) = 73## ##2x+1 = 73## ##2x = 72## ##x=36## and the two consecutive integers are ##36## and ##37##

  • Waiting for answer How do beats help determine whether two sound waves are of t...

    The closer the frequencies of the wave are to each other, the less frequent the beats. When two waves have the same frequency, there will not be any beats. Beats come from between...

  • Waiting for answer What was FDR's "court packing plan" and why was it such a se...

    FDR's court packing plan was a plan to add new justices onto the supreme court for each justice over the age of 70.5 years. It showed the limit of FDR's power over the government. Th...

  • Waiting for answer What is the lithosphere and why is it important?

    The lithosphere is the outermost 'sphere' of the solid Earth, consisting of the crust and the upper part of the mantle. The lithosphere is largely important because it is the area t...

  • Waiting for answer The molecular formula for glucose is C6H12O6. What would the...

    ##C_18H_32O_16## since this is a dehydration reaction, it means that when two molecules are linked together, there will be one molecule of water ##H_2O## removed. Therefore, the mo...

  • Waiting for answer A sphere with a radius of 1.7cm has a surface area of? a) ##...

    a) ##3.6*10^(-3) m^2## a) is the only possibly correct answer since the other two have units which are not areas (both ##m## and ##mm## are linear measures). We can verify the area...

  • Waiting for answer What the mass percent of aluminum in ##Al(OH)_3##?

    ##color(magenta)"34.59%"## In order to calculate the mass percent of aluminum in that ionic compound, we're going to need two things: ##color(blue) "1: The formula mass of the entir...

  • Waiting for answer How do you find the linear approximation of ##(1.999)^4## ?

    You can use the tangent line approximation to create a linear function that gives a really close answer. Let's put ##f(x) = x^4,## we want ##f(1.999)## so use x= 1.999 and the nearby point of tangency a = 2. We'll need ##f'(x)=4x^3## too. The linear approximation we want (see my other answer) is...

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